Swivel-loom.



Patented'Apr. 22, I902. a. F HUTCHINS & .1. T. CYB.

SWIVEL LOOM. (A umimi filed Dec. 11, 1901.)

(No Model.)

UNITED STATES PATENT OFFICE.

GEORGE F. HUTCHINS AND JOSEPH T. CYR, OF WORCESTER, MASSACHU- SETTS,ASSIGNORS TO CROMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS,A CORPORATION OF MASSACHUSETTS.

SWlVEL-LOOM.

SPECIFICATION forming part of v Letters Patent No. 698,203, dated April22, 190i. Application filed December 11,1901. Serial No. 85,422. (Nomcdel.)

To all whom it may concern: 7

Be it known that we, GEORGE F. HUTCH- INS and JOSEPH T. OYR, citizens ofthe United States, residing at Worcester, in-the county of Worcester andState of Massachusetts,have jointly inventedcertain new and usefulImprovements in Swivel-Looms, of which the following is a specification.

Our invention relates to swivel-looms, and more particularly to theshuttle-motion of a swivel-loom in which a rack and-pinion mechanism isused to communicate motion to the swivel-shuttles and cause them to havea reciprocating motion in a horizontal plane in the well-known way. Inthis class of looms it is very desirable to be able to weave with theswivel-shuttles spots or small figures close together in transverselines on the face of the fabric and at the same time to have the spacesbetween'the blocks carrying the shuttles, into which spaces thewarp-threads enter during the operation of Weaving the spots or smallfigures,as Wide as possible,so that larger spots or figures can be woventhan could be if said spaces were narrower. In order to weave spots orsmall figures close together transverse of the fabric and to have theordinary width' plane through a pinion driven by a rack and meshingdirectly with a rack on the inner end of the swivel-shuttle, it has notbeen found practical to keep the same width of the space between theshuttle-blocks and reduce the amount of travel of each swivel-shuttle,so that the distance between the centers of the shuttles has to beconsiderable-for example, two inches or more-and therefore the spots orsmall figures woven by the swivel-shuttles cannot be at a less distanceapart.

The object of our improvements is to make an improved driving mechanismfor swivelshuttles, by means of which the amount of travel of eachswivel-shuttle in a horizontal plane is reduced, so that the centers ofthe swivel-shuttles can be closer together, thus bringing the spots orsmall figures transverse of the fabric nearer together, and at the sametime the ordinary width of the spaces between the shuttle-blocks ismaintained, so

that the size of the spots or smallfigures need not be reduced, as willbe hereinafter described.

Our invention consists in certain novel features of construction of ourimprovements, as will be hereinafter fully described.

We have only shown in the drawings sufficient portions of theswivel-shuttle mechanism of a loom with our improvements applied theretoto enable those skilled in theart to which our invention belongs tounderstand the construction and operationthereof.

Referring to the drawings, Figure 1 is a front viewof a portion of aswivel-shuttledriving mechanism embodying our improvements with aface-plate at one end removed. Fig. 2 is a vertical cross-section online 2 2, Fig. 1, looking in the direction of arrow at, same figure.Fig.3 corresponds to Fig. 1, but shows the swivel-shuttles in theirmiddle position. Fig. 4: is a vertical cross-section on line 4 4, Fig.1, looking in the direction of arrow "a, same figure. Fig. 5 is an innerend View of the shuttle detached, showing the toothed segment or rackthereon. Fig. 6 is a rear view of the pin-carrying disk, showing thepinion to which the disk is attached; and Fig. 7 is a section on line 77, Fig. 6, looking in' the direction of arrow 6, same figure.

In the accompanying drawings, 1 is the back plate, having a longitudinalrecess 1 therein for the horizontally moving and reciprocating toothedrack 2 in the ordinary way.

The lower part of the back plate 1 has a series of open-end slots 1" inthe ordinary way and is recessed on its front surface to receive thepinions 3, each loosely mounted on a tube 4, fast in the back plate 1 inthe ordinary way,

and the pinions 5, each extending below a pinthe front face of saiddisk. The disk 7 is in this instance secured to the pinion 5 by rivets7", Fig. 6.

The swivel-shuttles 8 are supported at their lower edges on a plate 9,secured to the lower edge of the plate 1, and have a groove in theirupper edges to receive an extension 10 on the lower edge of theface-plates 10 in the ordinary way. The face-plates 10 extend over therack-and-pinion mechanism and are recessed upon their lower innersurface (see Fig. 3) and are secured to the back plate 1 in the ordinaryway by screws 13. The tubes 4: extend through and have a bearing in theplates 10.

Upon the inner end of each swivel-shuttle 8 is a toothed segment or rack11, secured thereto by screws 11 and preferably of the shape showninFig. 5, having the two longer end teethia a and the intermediate shortertooth b and the two recesses c 0 between the teeth.

A reciprocating motion is communicated to thetoothed rack 2 in theordinary way and through pinions 3 and 5 to the disk 7, carrying thepins 7, which in the revolution of said disk come into engagement withone end tooth a of the toothed segment 11 on the back of aswivel-shuttle 8 and enter into the recesses c 0 between the teeth a a,to move the swivel-shuttle firstin one direction and then in the otheracross the open-end slots 1", as shown in Fig. 3.

It will be seen that by means of the pin 7 on the disk- 7 (which isrotated from the rack 2 through pinions 3 and 5) and the long teeth a aon the toothed segment 11 on the swivelshuttle 8 the beginning of therotation of the disk- 7 will cause one of the pins 7 (which are arrangedon the disk 7 to correspond with the distances between the longer teethout of the toothed segment 11) to engage one of the teeth a a and move.the shuttle, and the continued revolution of the disk 7 carries theswivelshuttle from one extreme position to its other extreme position.

By means of the pins 7 on the disk 7 and the toothed segment or rack 11on the swivelshuttle 8 the amount of travel or motion of each shuttle isreduced, so that the swivelshuttles can be placed nearer together andthe distances between their centers reduced, thus permitting of theweaving of spots orsmall figures transverse of the fabric nearertogether.

It will be understood that the details of construction of ourimprovements may be Varied, if desired. The intermediate pinion 3 maybeomitted and the rack 2 mesh directly with the pinion 5, connected withthe disk 7. The intermediate pinion 3 is used to allow the rack 2 to beplaced in its usual position at the upper part of the back plate 1.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. In a swivel-shuttle motion, in which the swivel-shuttles have areciprocating motion in a horizontal plane, the combination with a rack,a disk carrying a series of pins extending at right angles from the facethereof to engage a toothed segment or rack on the innor end of aswivel-shuttle, and mechanism intermediate the rack and disk, to rotatethe disk by the movement of the rack, of said swivel-shuttle, having atoothed segment, or rack on its inner end, substantially as shown anddescribed.

2. In a swivel-shuttle motion, in which the swivel-shuttles have areciprocating motion in a horizontal plane, the combination with a rack,a disk carrying a series of pins to engage a toothed segment or rack onthe inner end of a swivel-shuttle, and mechanism intermediate the rackand disk to rotate the disk by the movement of the rack, of saidswivelshuttle having a toothed segment or rack on its inner end,comprising two longer end teeth, an intermediate shorter tooth, and tworecesses between the teeth, substantially as shown and described.

3. In aswivel-shuttle motion, in which the swivel-shuttles have areciprocating motion in a horizontal plane, the combination with a rack,a pinion meshing therewith, a second pinion meshing with thefirst-mentioned pinion, a disk connected with the second-mew tionedpinion and carrying a series of pins extending at right angles from theface thereof to engage a toothed segment or rack on the inner end of aswivel-shuttle, of said swivel-shuttle having a toothed segment or rackon its inner end, substantially as shown and described.

4. In a swivel-shuttle motion, in which the swivel-shuttles have areciprocating motion in a horizontal plane, the combination with a rack,a pinion meshing therewith, a second pinion meshing with thefirst-mentioned pinion, a disk connected with the second-mentionedpinion and carrying a series of pins to engage a toothed segment or rackon the inner end of a swivel-shuttle, of saidswivelshuttle having atoothed segment or rack-on its inner end, comprising two longerendteeth, an intermediate shorter tooth, and two recesses between theteeth, substantially as shown and described.

GEO. F. HUTGHINS. JOSEPH T. G'YR. \Vitnesses:

J OI-IN O. DEWEY, H. HAAS.

